Files
paseo/plugin-examples/lifecycle-actions
Mohamed Boudra a886bfbcdd Give plugins an agent's background work count and a background flag on hooks (#9362)
* feat(plugins): give plugins the agent's sidebar indicator and background flag

Plugin UI re-derived agent state from status and attention fields and could
not see background work, so it showed agents as done while a shell they left
running was still live. Agent snapshots now carry the sidebar's own bucket as
indicator/indicatorLabel, computed by the same function the sidebar uses so
the two cannot drift.

Lifecycle hooks and the agent.open.before request now carry `background`, so a
hook can skip a hidden helper agent without a lookup. A hook cannot change it;
an omitted value means unchanged, like metadata.

`finished` attention still means the turn finished; background work is the
indicator's concern.

* fix(plugins): keep session-open hooks that omit background typechecking

A hook that returns its own object instead of spreading the request has no
background field; the result type now treats it as optional, like metadata,
matching the runtime where an omitted value means unchanged.

* refactor(plugins): give agent snapshots the background work count instead of an indicator

* fix(plugins): keep legacy session-open hooks that omit background typechecking
2026-11-11 15:10:13 +07:00
..

Lifecycle actions

Small callbacks using the existing SDK:

  • Send Try again. when the latest output contains out of credits, except to background agents.
  • Decline a shell request matching rm -rf; approve exactly git status; leave other requests alone.
  • Inject PASEO_HOOK_CREATE_EXAMPLE=created on creation and PASEO_HOOK_OPEN_EXAMPLE=opened on each session opening.
  • Change requested Codex agents to Claude Haiku before creation.
  • Create a worktree when a directory creation request is titled Isolated lifecycle example.

This is a demonstration plugin: installing it enables all these behaviors on its host. Install it alongside lifecycle-logger on a test daemon with plugins enabled:

paseo plugin install /absolute/path/to/plugin-examples/lifecycle-actions
paseo plugin install /absolute/path/to/plugin-examples/lifecycle-logger
paseo plugin logs lifecycle-logger

Outside the Paseo repository, server/inspect.ts needs @getpaseo/protocol installed for its type imports. Add it to your plugin development dependencies at the same version as @getpaseo/plugin before installing this example.

Copy the callbacks you need into your own plugin. The follow-up example sends a new message; it does not replay attachments or undo previous tool effects. If the provider keeps returning the matching phrase, it keeps sending follow-ups. Add limits or delay in your plugin when your workflow needs them. The command regex illustrates a policy; it does not parse shell syntax or cover every deletion command.

server/inspect.ts joins provider text chunks and excludes earlier turns and the current user prompt from the phrase match. The failing-first regression test records the split text observed with a real Claude agent.

See agent configuration for a focused example that injects MCP servers and changes Codex sandbox and approval options while preserving other settings.

See the lifecycle reference for the API.